85777548 has 12 divisors (see below), whose sum is σ = 200147640. Its totient is φ = 28592512.

The previous prime is 85777541. The next prime is 85777553. The reversal of 85777548 is 84577758.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 85777548.

It is not an unprimeable number, because it can be changed into a prime (85777541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3574053 + ... + 3574076.

It is an arithmetic number, because the mean of its divisors is an integer number (16678970).

Almost surely, 2^85777548 is an apocalyptic number.

It is an amenable number.

85777548 is an abundant number, since it is smaller than the sum of its proper divisors (114370092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85777548 is a wasteful number, since it uses less digits than its factorization.

85777548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7148136 (or 7148134 counting only the distinct ones).

The product of its digits is 2195200, while the sum is 51.

The square root of 85777548 is about 9261.6169214668. The cubic root of 85777548 is about 441.0195845910.

The spelling of 85777548 in words is "eighty-five million, seven hundred seventy-seven thousand, five hundred forty-eight".